One of classical music's most beloved conductors has died: Latvian-born Mariss Jansons, who was age 76 at his death on Saturday in St. Petersburg, Russia.

Jansons had long had a heart condition, which first became known when he collapsed on the podium while conducting in Norway more than 20 years ago.

It's been 37 years since Prince released 1999, but this week, the Prince estate will reissue a remastered version of the iconic album — this time with 35 previously unreleased tracks. During his lifetime, Prince was notoriously protective of his music, both released and unreleased.

"I think that Tom Waits is an artist who makes art for the sake of making art," singer Allison Moorer says.

When news broke earlier this year that Beck's marriage of nearly 15 years was ending, it seemed a safe bet that a certain kind of album would follow: not the surreal, up-tempo Beck of Odelay, Midnite Vultures or Guero, but something melancholy and ballad-heavy — like his album of the year winner, Morning Phase, or his 2002 breakup opus, Sea Change. Stylistically, Beck remains a musical chameleon of remarkable range and elasticity.